A generalized CFD model for evaluating catalytic separation process in structured porous materials  

作　　者：Anshi Hong Zisheng Zhang Xingang Li Xin Gao 

机构地区：[1]School of Chemical Engineering and Technology,National Engineering Research Center of Distillation Technology,Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin University,Tianjin 300072,China [2]Department of Chemical and Biological Engineering,University of Ottawa,Ottawa K1N 6N5,Canada

出　　处：《Chinese Journal of Chemical Engineering》2022年第11期168-177,共10页中国化学工程学报（英文版）

基　　金：financial support from the National Key Resaerch and Development Program of China (2019YFE0123200);National Natural Science Foundation of China (21776202)。

摘　　要：A hybrid multiphase model is developed to simulate the simultaneous momentum, heat and mass transfer and heterogeneous catalyzed reaction in structured catalytic porous materials. The approach relies on the combination of the volume of fluid(VOF) and Eulerian–Eulerian models, and several plug-in field functions. The VOF method is used to capture the gas–liquid interface motion, and the Eulerian–Eulerian framework solves the temperature and chemical species concentration equations for each phase.The self-defined field functions utilize a single-domain approach to overcome convergence difficulty when applying the hybrid multiphase for a multi-domain problem. The method is then applied to investigate selective removal of specific species in multicomponent reactive evaporation process. The results show that the coupling of catalytic reaction and interface species mass transfer at the phase interface is conditional, and the coupling of catalytic reaction and momentum transfer across fluid–porous interface significantly affects the conversion rate of reactants. Based on the numerical results, a strategy is proposed for matching solid catalyst with operating condition in catalytic distillation application.

关 键 词：CFD(computational fluid dynamics) Hybrid multiphase model SiC foam Mass transfer Catalytic distillation 

分 类 号：TQ426[化学工程]